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Fencer Intel
medium 4.3

CVE-2012-1965 json

Mozilla Firefox 4.x through 13.0 and Firefox ESR 10.x before 10.0.6 do not properly establish the security context of a feed: URL, which al…

published 2012-07-18 14 y ago modified 2026-06-16 4 mo ago also EUVD-2012-1974

cvss
4.3
version 2.0, NVD
cisa kev
Not listed
not in CISA's catalog
epss
2.2%
EPSS 2.2% chance of exploitation in 30 days, percentile 82%
public exploits
0
none known

Summary

Mozilla Firefox 4.x through 13.0 and Firefox ESR 10.x before 10.0.6 do not properly establish the security context of a feed: URL, which allows remote attackers to bypass unspecified cross-site scripting (XSS) protection mechanisms via a feed:javascript: URL.

Patch / fix

  • firefox RHEL 5 10.0.6-1.el5_8
  • firefox RHEL 6 10.0.6-1.el6_3
  • xulrunner RHEL 5 10.0.6-2.el5_8
  • xulrunner RHEL 6 10.0.6-1.el6_3

red hat advisories RHSA-2012:1088

  • firefox-esr openSUSE Tumbleweed 128.5.1-1.1
  • MozillaFirefox openSUSE Tumbleweed 50.1.0-1.1

opensuse advisories openSUSE-SU-2024:14572-1openSUSE-SU-2024:10071-1

Vendor advisories

What the vendors themselves say about their products: affected, fixed or not affected, and what to do.

red hat product security vex CVE-2012-1965 updated cvss 4.3

Mozilla: feed: URLs with an innerURI inherit security context of page (MFSA 2012-55)

  • Red Hat Enterprise Linux (v. 5 server) firefox 10.0.6-1.el5_8, xulrunner 10.0.6-2.el5_8 Red Hat Enterprise Linux Desktop (v. 5 client) firefox 10.0.6-1.el5_8, xulrunner 10.0.6-2.el5_8 Red Hat Enterprise Linux Desktop (v. 6) firefox 10.0.6-1.el6_3, xulrunner 10.0.6-1.el6_3 Red Hat Enterprise Linux Desktop Optional (v. 6) xulrunner 10.0.6-1.el6_3 Red Hat Enterprise Linux HPC Node Optional (v. 6) firefox 10.0.6-1.el6_3, xulrunner 10.0.6-1.el6_3 Red Hat Enterprise Linux Server (v. 6) firefox 10.0.6-1.el6_3, xulrunner 10.0.6-1.el6_3
    +4 more products
    Red Hat Enterprise Linux Server Optional (v. 6) xulrunner 10.0.6-1.el6_3 Red Hat Enterprise Linux Workstation (v. 6) firefox 10.0.6-1.el6_3, xulrunner 10.0.6-1.el6_3 Red Hat Enterprise Linux Workstation Optional (v. 6) xulrunner 10.0.6-1.el6_3 Red Hat RHEL Desktop Workstation (v. 5 client) xulrunner 10.0.6-2.el5_8
    fixed: vendor fix RHSA-2012:1088
  • Red Hat Enterprise Linux 5 thunderbird Red Hat Enterprise Linux 6 thunderbird
    not affected: vulnerable code not present

Red Hat CSAF VEX © Red Hat, Inc., from https://security.access.redhat.com/data/csaf/v2/vex/; changed: reduced to product statuses and remediations. CC BY 4.0 · csaf

Exploit prediction

2.21% chance of exploitation in the next 30 days, higher than 82% of all scored CVEs (FIRST EPSS, 2026-11-09).

CVSS scores

assigned by version score vector
NVD 2.0 4.3 AV:N/AC:M/Au:N/C:N/I:P/A:N

Classification

Weakness
  • CWE-79 Improper Neutralization of Input During Web Page Generation

References

Sources

Fencer Intel keeps one entry per vulnerability: the CVE id wins, then GHSA, and records that alias each other are merged, except that two CVEs always keep separate entries. The same data is available as JSON.